Particle creation in a colliding plane wave spacetime: wave packet quantization

Details Particle creation in a colliding plane wave spacetime: wave packet quantization Particle creation in a colliding plane wave spacetime: wave packet quantization

1994-03-09

arxiv.org/abs/gr-qc/9403015v1

Phys.Rev. D50 (1994) 2631-2644

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

23, latex, figures available by fax

Scientific paper

10.1103/PhysRevD.50.2631

We use wave packet mode quantization to compute the creation of massless scalar quantum particles in a colliding plane wave spacetime. The background spacetime represents the collision of two gravitational shock waves followed by trailing gravitational radiation which focus into a Killing-Cauchy horizon. The use of wave packet modes simplifies the problem of mode propagation through the different spacetime regions which was previously studied with the use of monocromatic modes. It is found that the number of particles created in a given wave packet mode has a thermal spectrum with a temperature which is inversely proportional to the focusing time of the plane waves and which depends on the mode trajectory.

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